80420-32-2

Upstream product

• 60166-10-1 [5,10,15,20-tetraphenylporphyrin]cobalt(III) chloride 
• 7732-18-5 water 
• 7647-01-0 hydrogenchloride 
• 14172-90-8 cobalt(II) 5,10,15,20-tetraphenylporphyrin 

Downstream Products

• 92937-74-1 nitro-meso-tetraphenylporphyrinatocobalt(III) 
• 57384-22-2 ClCo(III)TPP(py) 
• 78694-29-8 [Co(TPP)(py)2]Cl 
• 92937-75-2 Co(C₂₀H₈N₄(C₆H₅)4)(CH₃CN)(⁽¹⁵⁾NO₂) 

Relevant academic research and scientific papers

The Crystal and Molecular Structure of Aquachloro (meso-tetraphenylporphyrinato)cobalt(III)

The crystal and molecular structure of the title compounds, IIICl(tpp)(H2O)>, has been determined by the means of X-ray diffraction techniques.The compound crystallizes in the monoclinic systems; space group P21/c.The unit cell has a=13.542(2), b=25.760(2), c=10.423(1) Angstroem, β=99.33(2) deg, and Z=4.The cobalt atom is coordinated by four porphyrinato nitrogen atoms, one chlorine atom, and one oxygen atom of water, and is displaced by 0.039(2) Angstroem from the mean plane defined by the four porphyrinato nitrogen atoms towards the axial chlorine atom.The average Co-N(tpp) distance is 1.955(2) Angstroem.The Co-Cl distance is 2.216(1), and the Co-O(water) distance, 1.979(3) Angstroem.The porphyrinato core is significantly ruffled and has an approximate symmetry.The IIICl(tpp)(H2O)> molecules are stacked along the c axis by O-H...Cl bonds.

Cobaltoporphyrin-catalyzed CO2/epoxide copolymerization: Selectivity control by molecular design

A series of cobalt(III) chloride porphyrin complexes of the general formula 5,10,15,20-tetra(p-alkoxy)phenylporphyrin cobalt chloride (4b-e) and the related 5,10,15,20-tetra(p-nitro)phenylporphyrin cobalt chloride (4f) are presented and their reactivity toward propylene oxide (PO)/CO2 coupling/copolymerization is explored. While the nitro-substituted complex (4f), in conjunction with an onium salt, shows moderate activity toward cyclization, the 4b-e/onium systems show superior copolymerization activity in comparison to tetraphenylporphyrin Co(III) chloride (4a) with high selectivity and conversion to poly(propylene carbonate) (PPC). A comprehensive copolymerization behavior study of the alkoxy-substituted porphyrin complexes 4b-e in terms of reaction temperature and CO2 pressure is presented. Complexes bearing longer alkoxy-substituents demonstrate the highest polymerization activity and molecular weights, however all substituted catalyst systems display a reduced tolerance to increased temperature with respect to PPC formation. Studies of the resulting polymer microstructures show excellent head-to-tail epoxide incorporation and near perfectly alternating poly(carbonate) character at lower polymerization temperatures.